1125667620 has 288 divisors, whose sum is σ = 4287419136. Its totient is φ = 232243200.

The previous prime is 1125667607. The next prime is 1125667661. The reversal of 1125667620 is 267665211.

It is a happy number.

1125667620 is a `hidden beast` number, since 1 + 1 + 2 + 566 + 76 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3340092 + ... + 3340428.

It is an arithmetic number, because the mean of its divisors is an integer number (14886872).

Almost surely, 2^1125667620 is an apocalyptic number.

1125667620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125667620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2143709568).

1125667620 is an abundant number, since it is smaller than the sum of its proper divisors (3161751516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125667620 is a wasteful number, since it uses less digits than its factorization.

1125667620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1125667620 is about 33550.9704777671. The cubic root of 1125667620 is about 1040.2476049997.

The spelling of 1125667620 in words is "one billion, one hundred twenty-five million, six hundred sixty-seven thousand, six hundred twenty".